--- viewer/svutil.h.orig	Sat Oct 22 04:21:21 2011
+++ viewer/svutil.h	Wed Dec 21 19:12:28 2011
@@ -39,6 +39,11 @@
 #else
 #include <pthread.h>
 #include <semaphore.h>
+#ifdef __OpenBSD__
+#include <unistd.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#endif
 #endif
 
 #include <string>
